Deuteronomy 12:29-31

29“When the Lord your God annihilates the nations before you, which you are entering to take possession of, and you drive them out and live in their land,

30be careful not to be ensnared by their ways after they have been destroyed before you. Do not inquire about their gods, asking, ‘How did these nations worship their gods? I’ll also do the same.’

31You must not do the same to the Lord your God, because they practice every detestable act, which the Lord hates, for their gods. They even burn their sons and daughters in the fire to their gods.